title: A cyclic mechanism for excitation and adaptation.
mesh_terms: D000064:Acclimatization; D000818:Animals; D002465:Cell Movement; D004926:Escherichia coli / Q000502:physiology*; D007700:Kinetics; D008433:Mathematics; D008954:Models, Biological; D010812:Physical Stimulation; D012486:Salmonella typhimurium / Q000502:physiology; D012694:Serine / Q000494:pharmacology; D014785:Vision, Ocular
chemical_list: D012694:Serine